Land-roller.



No. 747,453. I PATENTBD DEC. 22, 1903.

M. M. LOVBERG.

LAND ROLLER. APPLICATION FILED SEPT. 29. 1903 H0 MODEL.

Patented December 22, 1903.-

PATENT OFFICE.

MARTIN M. LOVBERG, OF BLAIR, WISCONSIN.

LAN D-ROLLER.

SPECIFICATION forming part of Letters Patent No. 747,453, dated December1903' v Application filed September 29, 1903. Serial No. 175,066. (Nomodel.)

To all whom it may concern.-

Be it known that I, MARTIN M. LOVBERG, a

citizen of the United States, residing at Blair,

in which a plurality of independently-mov-' able rollers are employed.

My invention has for its object to providea roller of this class whichshall possess superior advantages in point of simplicity, durability,and general efficiency, in which each of the separate rollers shall bemounted in such a manner as to be capable of adjusting itselfindependently to the surface of the soil, in which there shall be ageneral absence of complication, thus enabling the roller to be easilymanufactured at a small expense and also enabling necessary repairs tobe made without skilled labor.

With these and other ends in View my invention consists in the improvedconstruction, arrangement, and combination of parts, which will behereinafter more fully described, and particularly pointed out in theclaims.

In the accompanying drawings, Figure 1 is a plan View of a land-rollerconstructed in accordance with the principles of my invention. Fig. 2 isa sectional view taken on the line 2 2. Fig. 3is a transverse sectionalview taken on the line 3 3. Fig. 4 is a perspective detail view showingthe end of one of the rollers and the means for connecting the stubaxlestherewith, the parts being separated, so that the construction may bereadily understood.

Corresponding parts in the several figures are indicated by similarnumerals of reference.

Referring to the drawings, 1 designates the main frame, which iscomposed of front and rear beams 2 and 3 and side beams 4 4, whereby thesaid front and rear beams are spaced.

5 designates the tongue, which is supported firmly upon the rear beam 3and which is elevated by a supporting-block 6 upon the front beam. Thetongue 5 has a seat-spring 7and a foot-rest 8, the seat 9 beingsupported upon the spring in the usual manner.

.The inner sides of the front and rear beams 2 and 3 are provided eachwith a plurality of staples 10, which are disposed in pairs in alinementwith each other, four pairs of these staples being shown in the drawingshereto annexed. Cross-pieces 11, four in number, are provided at theirends with yokes 12, which are suitably and permanently secured upon saidcross-pieces and which have sliding connection with the staples 10, thusenabling the cross-pieces to have free andunobstructed movementvertically. These cross-pieces are provided with bearings for the axlesof the rollers 14, which latter (two in number) are each journaled in apair of the verticallymovable cross-bars, the two pairs of which aresupported by the four pairs of staples, as before described. The axlesof the roll ers may be of any suitable construction, according to thematerial of which the rollers are constructed and to the generalstructure of the rollers themselves. In the accompanying drawings I haveshown wooden rollers provided at their ends with transverse recesses 15and central depressions stub-axles 19 projecting through theperforations 21 and engaging the bearings in the cross-pieces 11. Itwill be readily understood that in this manner a very flexibleconnection is secured, which enables the cross-pieces 11, in which therollers have their hearings, to move independently of each other, sothat the ends of each roller are freely and independently movable andenabled to adapt themselves to the surface of the soil.

To the rear frame-beam 3 are hingedly connected a pair of movablebearing-pieces 24, affording bearings for a roller 25, which covers thespace between the two front rollers. The stub-axles of said rear rollerare conn ected flexibly with the latter in the same manner as thestub-axles 19 are connected with the rollers 14, so that perfect freedomof movement may be had by the said rear roller. The rear ends of thesupporting-pieces or bearing-pieces 24 are connected with the rearframe-piece 3 by means of link-rods 26 in order to insure strength ofattachment without interfering with the freedom of movement of theparts.

From the foregoing description, taken in connection with the drawingshereto annexed, the operation and advantages of my invention will bereadily understood. It is of course well known that sectionalland-rollers have heretofore been in general use; also that rollerscomprising a pair of suitably-mounted front rollers have been followedby a tracking-roller covering the lap or gap between the two frontrollers. By my invention, however, I provide a land-rolling device inwhich the several rollers are freely movable independently of each otherand with the utmost degree of flexibility without the use of complicatedjoints or couplings which aresometimes used in devices of this class andwhich greatly tend to increase the cost thereof without securing anybetter results.

In putting together the frame, which has been described as the mainframe, I prefer that the ends of the side beams 4 be provided withrabbets 4, engaging mortices 4 in front and rear beams 2 and 3. Thelatter, which are thus spaced apart by the side pieces 4, are connectedby means of a screw-threaded rod or bolt 4 whereby a very durableconstruction is attained, while at the same time the frame may bereadily knocked down when required for shipment or other purposes.

a frame, of a plurality of pairs of bearingblocks provided with yokes atthe ends thereof, and staples upon the frame engaged by the said yokes.

3. In a land-roller, a frame, a plurality of pairs of vertically-movableindependent bearing-blocks, a roller for each pair of blocks, stub-axlesflexibly connected with the ends of the rollers and engaging the saidbearingblocks.

4. In a land-roller, a plurality of independently-movable rollers,stub-axles connected flexibly with each of said rollers, andindependently-movable bearing-blocks engaged by the flexible stub-axlesof said rollers.

5. In a land-roller, a rotary element provided at its ends with shallowrecesses and centrally-disposed depressions,centrally-perforated diskshaving recesses alining with those in the ends of the rollers, rodsdisposed in said recesses,stub-axles extending through the centralperforations in the disks and having eyes engaging the rods, and meansfor securing the disks upon the ends of the rollers.

In testimony that I claim the foregoing as my own I have hereto aflixedmy signaturein the presence of two witnesses.

MARTIN M. LOVBERG.

Witnesses:

A. B. PETERSON,

S. STEFFENSON.

